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Letters .Patent No. 82,680, dated Oktober 6, 1868'.

IMPROVEMENT IN Arte-HEAD.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, BUFUS, E. BEAN, of Franklin, in the county ofMerrimack, and State of New Hamp-` shire, have invented a newandimproved Axle-Head; and I do hereby declare that the following is a fulland exact description of the same, reference being had to theaccompanying drawings, and to the letters of reference marked-thereon.

This invention consists of a novel device for attaching heads to axles,for-the purpose of confining wheels in their places, which device is soconstructed that the head cannot by any means be thrown oi` by' thebacking of the carriage, as is frequently the case when nuts are used,as will be fully described hereinafter.

' In the drawings- A repres-Ignts one end of a carriageaxle, which isprovided with the projection a, constructed as shown, with the circularpart, al, and cross-bar a2. Y

B represents a collar, provided with screw-threads, for the purpose ofattachment to the head C, and with the opening b corresponding in shapewith the projection a, the collar being the same in width as the lengthof the circular part al of the projection.

When the projection is inserted in the opening, itwill be observed thatthe parts b form bearings for the circular part al, the ears ofthecross-bar being'upon the insidelot` the collar. i When in this position,if a. slight turn be given to the collar or to the axle, the ears of thecross-bar pass behind the collar, and it is impossible to remove the onefrom the other.

C' represents the head, which is provided upon the inside with a plate,c, resting upon the spring, c1, and kept in place by the rod c2, withhead or button, c3. Upon the face of the plate c, a slight depression ismade, corresponding in length and width with the end ot' the cross-bara2 of the axle.

c* o* represent projections, extending up the sides of the head. Op,upon which the plate c slides, corresponding parts having been cut away.I v

By this arrangement, the plate is prevented from turning in the head.When the collar4 is screwed into the head, it will be observed that thedepression in the plate c is at right anglespor nearly so, withv 4theopening b.

It will-also be observed that the distancebetween the bottom ofthedepression and the inside ofthe collar -is the sam'e as 'the width ofthe cross-bar a2, but as the depression is not in line with the opening6, as before stated, it is evident that the projection cannot beinserted far enough into the headl to allow the ears of' the cross-barto pass in behind the collar. But if pressure be applied to thel1ead,'the spring behind the plate will yield and allow the projectionto enter the headfanenough for this purpose.

The head then being turned suiciently, and the depression being'reached, the spring behind the plate forces the lattcrforward, and theprojection is firmly held thereby.

By this arrangement 4the head is firmly secured to the axle, it beingimpossible for it to come off unlessv the platea be withdrawn far enoughto lose its hold upon the projection, and allow the head to be turned.

When it is desired to remove the wheel, a key, Figure 5, with suitablewedge-like claws, is slipped under the but-ton c3, by which means theplate c is pulled back fa'r enough to allow the head to turn until .theopening is in line with the projection. Other devices for preventing thehead from' turning may suggest themselves. Instead of a depression,points may be used upon the plate, or other means may be used foraccomplishing the same result. l v

Thisconstruction and arrangement gives a simple and elicient fastening,one that admits of the removal of the wheel easily and readily, and atthe same time is perfectly secure. l

Having thus fully described my invention, what I claim as new, a'nddesir'eto'seou're by Letters Patent, is-

1. An axle, with a projecting cross-bar, in combination with a head, thelatter having an opening in its inner face, corresponding with thecross-bar, and also u. spring-plate, provided with a depression orpoints, by which latter means the cross-bar is prevented from turningwhen on'ce secured in place.

2. The head C, plate c, constructed as shown, projection c4, spring c1,rod o2, and button c3, in combination with collar B, with opening I), asand `for the purpose described.

3. The head C, constructed as described, in combination with theprojection auf axle A, substantially as and for the purposefexplained.

This specitication signed and witnessed, this sixth day of February,1868.

` RUFUS E. BEAN.

Witnesses E. B. S; SANeonN, Roer. W. BENNETT.

